摘要
高分多模卫星(GFDM-1)敏捷机动范围达到了单轴45°,机动速度达到了4.5(°)/s,大角度高速机动可能造成接收机失锁与接收星数下降导致非定位问题。文章提出了双天线同时参与解算的双频双模星载导航定位定轨体制,有效解决了姿态机动过程中接收星数减少问题,并实现了星载导航连续高精度定位。同时,采用了异构的测控分系统设计,提高了测控分系统可靠度,实现了卫星全球测控能力以及星地测控抗干扰能力。
GFDM-1 satellite agile maneuver range reaches 45°of single axis,and the maneuver speed reaches 4.5(°)/s.Large angle high-speed maneuver may cause the receiver to lock loss of receiver and decrease of receiving satellite numbers,resulting in non-positioning.In this paper,a dual frequency dual-mode satellite navigation and orbit determination system with dual antennas is proposed,which can effectively solve the problem of reducing the number of receiving satellites in the process of maneuver and realize the continuous high-precision of satellite positioning.At the same time,the design of heterogeneous Tracking Telemetry and Command(TT&C)subsystem is adopted to improve the reliability of TT&C subsystem,and realize the global capability of satellite as well as the anti-jamming capability of satellite ground TT&C.
作者
汪精华
梁杰
杨文涛
王跃
王阔
WANG Jinghua;LIANG Jie;YANG Wentao;WANG Yue;WANG Kuo(Institute of Remote Sensing Satellite,China Academy of Space Technology,Beijing 100094,China;Beijing Institute of Spacecraft System Engineering,Beijing 100094,China)
出处
《航天器工程》
CSCD
北大核心
2021年第3期135-140,共6页
Spacecraft Engineering
基金
国家重大科技专项工程。
